Brake-applying means



April 21, 1931.

G. F. MICHAEL 1,801,444

BRAKE APPLYING MEANS Filed'Nov. 28. 1927 FIG. 7

INVENTOR Gms F. Macaw.

Patented Apr. 21, 1931 4 UNITED STATES PATENT OFFICE GUS 1'. mm OF SOUTH BEND, INDIANA, ASSIGNOB TO BENDIX BRAKE COMPANY,

' OF SOUTH BEND, INDIANA, A. CORPORATION 01' ILLINOIS BRAKE-APPLYING 1mm Application fled November 28, 1927. Serial No. 238,042.

This invention relates to brakes and is illustrated as embodied in novel operating.

In one desirable arrangement, the novel brake ap lying means includes two parts (preferab y steel stampin s) mounted on a brake applying shaft an one of which is secured to the shaft and is formed at its outer edge with teeth, while the other one 35 is movable on the shaft and is provided with teeth interlocking with the teeth of the first part and which serves as an adjustable lever for operating the shaft. Preferably, a spring is arranged to hold the teeth of the two parts in interlocking engagement, and

in the embodiment illustrated in the drawing the s ring is confined between the adjustable ever and a stop on the end of the shaft, so that it ma yield when the lever is moved axially o the shaft to disengage its teeth in order to adjust it with respect to the shaft. The two stam ings are shown with oppositely drawn tu ular bearing portions sleeved on the shaft.

Other objects and features of the invention, includin a novel offset thrust portion formed on t e lever and other desirable features, will be a parent-from the following description 0 the illustrative embodi- 35 ment shown in the accompanying drawing,

in which:

Figure 1 is a partial vertical section through the novel brake applying means showing the brake operating shaft in rear elevation U V I Fi ure 2 is a horizontal section throu h the rlght hand portion of Figure 1 on t e line 2-2 of Figure 1 and showing the interlocking of the teeth;

Figure 3 is an end elevation of the stampin the direction of the arrows 7-7 of Figing which is secured to the shaft, looking from the right in Figure 1;

Figure 4 1s a corresponding end elevation of the stamping which serves as a lever and also looking from the right in Figure 1;

Figure 5 is a bottom plan view of the lever looking in the direction of the arrows 5-5 of Figure 1;

Figure 6 is a rear elevation of the lower part of a modified form of lever and corresponding to the lower part of Figure 1; an

Figure 7 is a side elevation of the portion of the lever shown in Figure 6 and looking 60 ure 6.

In the arrangement selected for illustration, the brake applying means includes a novel shaft 10, arranged to be journaled in a su port carried by thebacking plate of the rake (and not shown), and which carries an operating lever or cam 12 which applies the brake in any desired and usual manner.

At its right end, that is at the end which is outside the brake, the shaft 10 is provided with a portion 14 of reduced diameter formed with a groove 16 at its end to interlock with a washer 18 which serves as a sto for a springl 20. This spring is confine between t e sto and a novel stamping or lever 22 which is adjustabl mounte on the portion 14 of the shaft an which is preferably formed with a tubular bearing portion 24 sleeved on the shaft. The lever 22 is formed on its two sides with series of teeth 26 arranged .in arcs about the center of the bearing portion 24, and which are bent laterally as shown in Figure 2 to interlock with teeth 28 extending radially at the outer edge of a co-operatlng stamping or equivalent part 30, which may also be provided with a tubular bearing portion 32 sleeved on the portion 14 of the shaft 10.

It will be noted that the tubular bearing portions 24 and 32 are drawn in opposite directions, so that the stampings 22 and are normally in direct engagement with each other, with the teeth 26 and 28 interlocklng with each other and with the spring 20 holding them interlocked. T hepart or stamping 30.is secured to the portion 14 of the shaft 10, for example by spot-welding at 34 or by means of a key or pin 36, or in any other desired manner.

The lever 22 may be operated to adjust its position on the shaft by grasping its upper and lower portions with the hand and pulling it to the right to compress the spring 20 and disengage its teeth 26 from the teeth 28 of the stamping 30. The lever 22 is then turned a distance of one or more teeth and is then released, whereupon the spring 20.

again causes the teeth to interlock with the teeth of the member 30.

At its lower end the lever 22 is formed with a laterally offset thrust portion 38 bent backwardly into supporting enga ement at 40 with the body of the lever and, if desired, spot-welded to the body of the lever at that oint. In the arrangement of Figures 6 and the lever is offset laterally at 42 and is then formed with a horizontal portion 44 at its lower end, a separate thrust stamping 46 of angular form being spot-welded or otherwise secured to the portion 44 of the lever and resting in thrust engagement with the ed e of the portion 42.

Whi e one illustrative embodiment of the invention has been described in detail, it is not my intention to limit its scope to that particular embodiment or otherwise than by the terms of the appended claims.

I claim:

1. Operating means compiising,.in combination with a shaft, two stampings having oppositely-drawn tubular bearing portions sleeved on the shaft and one of which is secured to the shaft and the other of which is extended to form an operating lever, said stampings having interlocking teeth, together with a spring normally holding said teeth interlocked and which can yield to permit the lever stamping to be turned one or more teeth with respect to the stamping secured on the shaft.

2. Operating means comprising, in combination with a shaft two stampings, one of which is secured to the shaft and the other of which is extended to form an operating lever, said stampings having interlocking teeth, together with a spring normally holding said teeth interlocked and which can yield to permit the lever stamping to be turned one or more teeth with respect to the stamping secured on the shaft.

3. Operating means comprising, in combination with a shaft, two stampings having oppositely-drawn tubular bearing portions sleeved on the shaft and one of which is sethe body of the lever and the offset thrust portion and the bent portion having jointly a triangular outline.

In testimony whereof, l have hereunto signed my name.

GUS F. MICHAEL. 

